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| STUDY OF CREEP PROPERTIES OF SALT ROCK WITH LOGGING DATA |
| LIU Wei1，XIAO Lizhi1，XIE Ranhong1，ZHU Yuqing2 |
| (1. State Key Laboratory of Petroleum Resources and Prospecting，China University of Petroleum，Beijing 102249，China；2. China National Petroleum Great Wall Drilling Corporation，Beijing 100101，China) |
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Abstract Based on five logging data，the crossplot and caliper vector techniques are introduced to build the logging evaluation method with multi-parameter，for example，caliper，caliper difference，borehole cross-sectional area，caliper integral(borehole vertical-sectional area)，borehole volume. Four crossplot methods clearly show the first stage and the second stage of creep under certain underground geological conditions. The first stage of creep is after 30 days. In this period the slope of creep curve and creep velocity are larger，and the creep velocity presents the trend of attenuation. The slope of creep curve and the creep velocity become smaller，and creep goes into the second stage. It demonstrates that the logging data can better evaluate the creep properties，and it can provide effective reference for the future running stability analysis of Jintan gas storage.
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Received: 18 December 2009
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2011, Vol. 30 
